<template>
  <div class="cmt-caient">
    <h3>发表评论</h3>
    <hr>
    <textarea placeholder="请输入要瞎BB的内容(最多吐槽120个字)" maxlength="120" v-model="msg"></textarea>
    <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>
    <div class="cmt-list">
      <div class="cmt-item" v-for="(item, i) in comments" :key="item.add_time">
        <div class="cmt-title">第{{ i+1 }}楼&nbsp;&nbsp;用户:{{ item.user_name }}&nbsp;&nbsp;发表时间:{{ item.add_time | dataFormat }}</div>
        <div class="cmt-body">{{ item.content === 'undefined' ? '这用户啥都没说' : item.content }}</div>
      </div>
    </div>
  
    <mt-button type="danger" size="large" plain @click="getMron">加载更多</mt-button>
  </div>
</template>
<script>

import Toast from 'mint-ui'

export default {
    data(){
        return{
            pageIndex: 1,
            comments:[],
            msg:''
        }
    },
    created(){
        this.getComment()
    },
    methods:{
        getComment(){
            this.$http
            .get("api/getcomments/"+ this.id +"?pageindex="+ this.pageIndex)
            .then( result=>{
                    if(result.body.status === 0){
                        this.comments = this.comments.concat(result.body.message)
                    } else {
                        Toast('获取失败！')
                    }
                }
            )
        },
        getMron(){
            this.pageIndex ++,
            this.getComment()
        },
        postComment(){
          if(this.msg.trim() === 0){
            return Toast('输入内容不能为空')
          }

          this.$http.post('api/postcomment/' + this.$route.params.id,{ content:this.msg.trim() 
          })
          .then(function(result){
            if(result.body.status === 0){

              var cmt = { user_name: '匿名用户', add_time: Date.now(),content:this.msg.trim() }

              this.comments.unshift(cmt)
              
              this.msg = ' '

            } else {
              Toast('提交评论失败')
            }
          })
        }
    },
   
    
    props:["id"]
};
</script>
<style lang="scss" scoped>
.cmt-caient {
  h3 {
    font-size: 16px;
  }
  textarea {
    font-size: 13px;
    margin: 0;
  }
  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 14px;

      .cmt-title {
        line-height: 28px;
        background-color: #ccc;
      }
      .cmt-body {
        line-height: 34px;
        text-indent: 2em;
      }
    }
  }
}
</style>
